alien

a|li|en¹ [ˈeıliən] adj

[Date: 1300-1400; : Old French; Origin: Latin alienus, from alius 'other']

1.) very different from what you are used to, especially in a way that is difficult to understand or accept

= ↑strange

▪ the alien environment of the city

be alien to sb

▪ a way of life that is totally alien to us

2.) belonging to another country or race

= ↑foreign

▪ alien cultures

▪ an alien multiracial society

3.) [only before noun]

relating to creatures from another world

▪ alien beings from another planet

alien ²

alien² n

1.) someone who is not a legal citizen of the country they are living or working in

▪ illegal aliens entering the country.

2.) in stories, a creature from another world